CVE-2023-2442

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 96.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-07 · updated 2026-06-17
Weakness: CWE-79

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A specially crafted merge request could lead to a stored XSS on the client side which allows attackers to perform arbitrary actions on behalf of victims.

Affected products

GitLab: from 15.11.0 before 15.11.7; from 16.0.0 before 16.0.2 — fixed in 15.11.7, 16.0.2

How to fix

Upgrade to a fixed version: GitLab 15.11.7, 16.0.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2442.json
https://gitlab.com/gitlab-org/gitlab/-/issues/409346
https://hackerone.com/reports/1965750
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2442.json
https://gitlab.com/gitlab-org/gitlab/-/issues/409346
https://hackerone.com/reports/1965750
https://gitlab.com/gitlab-org/gitlab/-/issues/409346

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